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Convert STAmount switchovers to tls (RIPD-1068)

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This commit is contained in:
Miguel Portilla
2016-01-08 15:00:55 -05:00
committed by Edward Hennis
parent 4fb6bf3e67
commit 14dde47173
17 changed files with 93 additions and 142 deletions
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39
src/ripple/protocol/impl/STAmount.cpp
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@@ -35,6 +35,10 @@
namespace ripple {
LocalValue<bool> stAmountCalcSwitchover(true);
using namespace std::chrono_literals;
const NetClock::time_point STAmountSO::soTime{504640800s};
static const std::uint64_t tenTo14 = 100000000000000ull;
static const std::uint64_t tenTo14m1 = tenTo14 - 1;
static const std::uint64_t tenTo17 = tenTo14 * 1000;
@@ -1139,9 +1143,8 @@ canonicalizeRound (bool native, std::uint64_t& value, int& offset, bool roundUp)
}
STAmount
mulRound (STAmount const& v1, STAmount const& v2,
Issue const& issue, bool roundUp,
STAmountCalcSwitchovers const& switchovers)
mulRound (STAmount const& v1, STAmount const& v2, Issue const& issue,
bool roundUp)
{
if (v1 == zero || v2 == zero)
return {issue};
@@ -1205,20 +1208,20 @@ mulRound (STAmount const& v1, STAmount const& v2,
canonicalizeRound (
isXRP (issue), amount, offset, resultNegative != roundUp);
STAmount result (issue, amount, offset, resultNegative);
if (switchovers.enableUnderflowFix () && roundUp && !resultNegative && !result)
// Control when bugfixes that require switchover dates are enabled
if (roundUp && !resultNegative && !result && *stAmountCalcSwitchover)
{
// return the smallest value above zero
amount = STAmount::cMinValue;
offset = STAmount::cMinOffset;
return STAmount (issue, amount, offset, resultNegative);
return STAmount(issue, amount, offset, resultNegative);
}
return result;
}
STAmount
divRound (STAmount const& num, STAmount const& den,
Issue const& issue, bool roundUp,
STAmountCalcSwitchovers const& switchovers)
Issue const& issue, bool roundUp)
{
if (den == zero)
Throw<std::runtime_error> ("division by zero");
@@ -1265,7 +1268,8 @@ divRound (STAmount const& num, STAmount const& den,
canonicalizeRound (
isXRP (issue), amount, offset, resultNegative != roundUp);
STAmount result (issue, amount, offset, resultNegative);
if (switchovers.enableUnderflowFix () && roundUp && !resultNegative && !result)
// Control when bugfixes that require switchover dates are enabled
if (roundUp && !resultNegative && !result && *stAmountCalcSwitchover)
{
// return the smallest value above zero
amount = STAmount::cMinValue;
@@ -1275,23 +1279,4 @@ divRound (STAmount const& num, STAmount const& den,
return result;
}
NetClock::time_point
STAmountCalcSwitchovers::enableUnderflowFixCloseTime ()
{
using namespace std::chrono_literals;
// Mon Dec 28, 2015 10:00:00am PST
return NetClock::time_point{504640800s};
}
STAmountCalcSwitchovers::STAmountCalcSwitchovers (NetClock::time_point parentCloseTime)
{
enableUnderflowFix_ = parentCloseTime > enableUnderflowFixCloseTime();
}
bool STAmountCalcSwitchovers::enableUnderflowFix () const
{
return enableUnderflowFix_;
}
} // ripple